how can i treat a metal shed to stop condensation forming inside on the roof?

Answer 1

It might sound silly, but try sticking some poltstyrene tiles on it.

Answer 2

Condensation comes from moist air being trapped inside the shed. The air above the roof is colder than the air inside, so condensation forms on the underside of the roof.

Ventilation will reduce condensation. There are wall-type vent inserts available at hardware stores. You can install a vent in a side wall and that will help but putting another in a second side wall, will make more difference. Both should be mounted near the top of the shed wall.

This will allow air movement and reduce the condensation, but if the amount of water is significant, then you should look for the source of the water and correct that as well.

This might be from leaks, or, if the shed has no floor, then from the ground beneath the shed. If there is no floor then you can put down a heavy sheet of continuous plastic across the entire floor. Condensation would then be greatly reduced.

Answer 3

You will not be able to stop condensation on the inside of a metal roof no matter how hard you try, if it's a serious problem and you really want to get rid of the condensation, you will need to replace the roof with timber or corrugated panels ( like asbestos but are not asbestos ) this might seem an extreme way to solve the problem but it is the only way, in this cold weather you will not be able to stop it, you can put poly sheeting under the roof to avoid the drips, and it will run down to the side walls, no amount of heating will help, in fact a paraffin heater will cause more condensation.

Answer 4

The polystrene tiles is a good idea and would probly help quite a bit. The problem is that warmer moist air is rising and hitting the cold metal roof (mostly at night). When the warm moist air encounters the cool roof, the air temp drops and some of the moisture condenses out of it forming the condensation. The solutions are

Insulate the roof with waterproof insulation
Add a vapor barrier under the floor to minimize the amount of moisture entering from the ground (in most places this is the biggest moisture source.
Add a vapor barrier (plastic sheet) to the underside of the roof (idealy after adding the insulation)
Add a vent (idealy one of those whirling ones) to change the air in your shed more often.

Answer 5

This Site Might Help You.

RE:
how can i treat a metal shed to stop condensation forming inside on the roof?

Answer 6

Anti Condensation Spray

Answer 7

The condensation comes from the inside of the shed being warmer than the outside. Installing insulation on the walls and ceiling would be the only way to help prevent condensation.

Answer 8

I wish I knew I have the same problem, mine is a concrete block shed with a metal roof, I tried drilling holes in the walls on front and back to allow an air flow but all this did was allow easy access for spiders and other insects so still have the problem

Answer 9

Install a few metal roof vents

Answer 10

the shed needs ventilating so air can circulate put a vent in the bottom of shed door and another vent in the top back wall this will increase air flow and should help your problem

Answer 11

Mix Paint with sand in the paint until it begins to get to look like very wet cement then paint it after first priming.This will act as anti condensation paint as used in wooden boat deckheads(ceilings)